To convert carats to ounces divide by 141.7476. I've generated some hopefully helpful examples randomly below, as with most random sentences please excuse the repetitive and occasionally comic outcomes.
You've got 1 carats of silver but someone only wants to buy that in units of ounces, to change the units divide by 141.7476. Now you have 0.00705479 ounces.
You have 7.3 carats of ruby's but you need to know how many ounces that is. To get the answer divide by 141.7476 which gives you 0.05149999 ounces.
To convert 0.3 carats into ounces divide by 141.7476 giving 0.00211644 ounces.
In 5.4 carats of diamonds there are 0.03809588 ounces, to achieve this take 5.4 and just divide by 141.7476.
How many ounces of platinum are there in 7.4 carats? Just divide by 141.7476 to get the answer of 0.05220547 ounces.